Engine.



PATENTED JULY 28, 1908.

J. MUNDEN.

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APPLIGATION FILED Dnc. 24, 1907.

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PATENTED JULY 28, 1908.

J. MUNDEN.

ENGINE.'

APPLICATION FILED DBO. 24, 1907.

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Beit knoxinfthatl', JosEriI'MUN a citizen of the United ffb`tate's,. resn ingfjat' B radenville, inthe County of es'tinoreland and State off Pennsylvania, have inventecl; .iieivr and useful" Improvements in Engines?. ofV

whielitlie follovvingisaspeecation. This. invention relates to internaleoinbus.-

.tion engines.. 'and has for'gitssobject Lthe production an engine having a `novel arrangeinen'tof vports and nvalve's Combined with .a

ey inder or elindersj or yexplosion Chambers thereof .are thoroughly freed of the' burned gasesbelore a ner Charge is ia'dn'iitted -and'- wl'iereby also a fresh ,Charge ofair isf'intro.-

--diieed into vthe explosion chamber and eoinj pressed togetlierwitli the inconiiiig gasolene l crank shaft or each )ack andv forth. move.`

or other hydro-carbon, thus obtaining Van eX-, plosion ,for eaeh'com )lete revolution of, the

nient of the. piston.

' A' further objectv of tlieinvi-intion ,to pro-i' vide for cooling the explosion chamber-or chambers internally by passing a body of eold airtlirough the same in each vcycle 'of operation. .Y f

A further objeet` of the invention is to provide aeonstruetion in which a long stroke of the. pistonis obtained, permitting the charge' to expand lalmost rov atmospherie pressure,l

- thereby dis ensing using a iiiii er.

. 6 is a sectional vvelevatiiiiii of the fans.'

with the necessitiT 'of- Vith the above and other objects -in view;V

the invention consists in thenovel construe'- tion, combination and arrangement of parts hereinafter fully elanned.

yIn the accompanying drawiiigsV-Figure 1 y is a vertical longitudinal seetiiintlirough an engine constructed 1n accordance with the pre-sent. invention. Fig. 2 is a plan vie-W of the saine'. Fig. 3 is an en d viev'v thereof4 Fig. 4 is aseepartly broken out in section. tional plan View o1 on(` of tl ie eyhnillers. Fig. 5 is an elevation ol the reversing gear.

' The engine coiiten'iiilated in this invention may'c'oniprise any number of cylinders aeeording to the power to be developed. For the purpose of illustration I have shown the engine as comprising three eylinders'l, 2 land 3, the cylinders 1 and 2 containing single aet-` 1 ing istons 4 ando and the cylinder 3 con taining-a double acting piston 6, Thesepistons are Connected by rods?, 8 andv 9 vto a.

fair under pressure7 whereby thev `ilesei^ibed,`v illustrated and @limon nkfshlfifiofhavingiim maken :thereof setv at "differ" Avangles to overcome .dead een'ter'sjand ldistr rit'hfcross heads 1 hieh slide ,along suit.-

' crossl lifeads being connected Awith 'era'iil shaftilU-fby means ofpitnie'n 15;"

".Theehafiist port '16 is .located aboiit Veeniii eylinm'lers .1.' and fivlieieb'y.v .the ypistonj Goinniunieates jooniiniinieatiori "another fpo'rtl -loeate(.l.adj"acent to the` top* ofzthf'ylihklera. in oiintel .a slide lvalve' `19 v.ha ving: a vplurality -of-ports 2O andV 21, the. port 2,0 being adapted vvtol registei'-` vvith fthe port 1S and the port 21 being adapted gto 4giegiste 17 vvith `the cylinder -port 16;

tends -dov'vnvvard-` a suitable. distance where connected toro s., bands 26 and a 27 Which-y embrace f eeentries 28 .'an'd. 29,1 on t-liefrank shaft IOfthejflast, named parts` being elementsof-the reversing gear" ivl'iieh v hereinafter be fully described; .In this.; vway` the slide valve of each cylinder ji drivenbyfthe crankshaft and-fthe .eeeen-- prdperijv with relation to the-movements of of' operation hereinafter set forth'. l 'L `30j iesignates''an.exhaust-pipe leading off '1 from the valve `chamber 1.7 and `adaptcal to be plaed'in communication with the cylinder byyiiieansV ofthe slide valve.

veniently loeated between adj aeent eylin# ders,` as shown `in Fig. 1, and comprises a pipe 32 Whiehis branched at 33 to extend to Y adjoining cylinders.`

. -Near the top, each cylinder is provided with an aaixiliarv air passage 341m which is `arranged .a eli'eekvalvefS and communicat- .ing Wit'hthe" corresponding passages 34- of lnte .the `poWerj oftheA ist'ons ,vtliereonfat east'one .thepistons eifrig-1engaged'jin` 'its a'etive strol'ef in any en'vpoi-n't'inthe otation'oftheerank shaft; @t isiLpre'er'red.to-connect the piston' 'rods i v-trnllvv ofthe length of the cylinder. asshoivn jb'y said exim-list` port once .inA eaeh strokeor twice in eaeli'doublejstroke-or oom-.

yplete rev`o lutionj'of'the.crank shaft 1D.` yAr;

eli amber 117 with "wliieli tlileexhaust port 1 6 d valve Chamber being iii vitli the .'veylindei", th rough "Withinfthey eliai'nber 17 is it is Connectedto a'sliding link 23 lwhich is' 24 and 25 `havinge'c,centric l the adj aeently loeatedvalve cl'ianibers of the the adjacent cylinders is an airjpipe 36 to Thestern. ZZlof'the slide valve eX- f )tries are vsetso as to time tlie slidevalves".

their-des'peetive lpistons* to obtain. the cyole f .31 designates an, air tank which is eoii-` which is connected pipeBYIiliicli leads to which 1t is associated.

` rem f een -the upper portion of the cylind itsjniovemen'the to. atmospheric-'pressure so that there is no 7 the piston has a scavenging action while the stroke, to -lie between' said top and bottommithair ports 18 and 1 8- for..introduciig airj under .jntakejllinto vthe explosion chamber and gjuSt at the proper instant a sparkle" engine' noiseless. It will thusfbe observed an auxiliary air tank 38, the. ""37 controlled by a throttle 39.. The check valves 35 are arranged to allowair tov pass into the cylinders, and revent--the' same from be vforced outwar In the head o each cylinder 1 and 2 there I is arranged a spark plu 40 and a gasolene sprayintake O41'adapte at the propermoment to inject a spray of gasolene or gas into y the explosion chamber o the cylinder with Suppose the piston 4 to be starting on its upstro e with the ports 21 and 20 1n communication vwith the orts `l'and 18. The. burned gases above t e piston are forced by said piston in its upward Imovement out. through the exhaust 16 and exhaust ipe 30. The port 18 is opened by the vslide vaive thus permitting the compressed air in the tank 31 to rush-in through the port 18 and expel the burnedigases'. throughthe 'exhaust 'rt 16. The piston 4 then movesl onupwardpglosing the portu 16, the latter being closed by the slide valve.'- During the remainder of its upwardjnevenient it compresses' the fresh air f tiringY this 'compression ortion of 'the stroke; gasolene is sprayed thgough the y -by the plug 40 thereby explodmg thee and driving the piston downgas `expands during the entire downward `movement of the piston and, by the time the piston reaches the lower limit of gas is practically expanded need Aof -`limilljngthe exhaust to render the thatthefirst operation ofthe up stroke of remaining portion of the upstroke is the eompression ortion of the movement -of said piston.. erefore, in the complete upstroke the latter acts to expel the burned gases andtocompress the fresh air has been utilized to drive out the remainder'- o the-burned gases. p 'Y .f The cylinder 3 is-provided with two -exapart to allow thepiston 6,l at one point in its exhaust ports. The valve chamber 17 contains a slide valve 19.whi ch corres onds with the slide valves V19 above descri ed andwhich is'actuatedV from the crank s haftinthe same manner. The exhaust pipe-41104.fishranehed and leads into ythe valve' chamber 17 162 and t e cylinder'is -also provided near its to enter the the samev in at two points vnearly o posite'fthe exhaust ports 1-6 and ..The lever 52 the cylinder isprovid'fed at the top andvb'ot? tom with auxiliary air'pports 34 and 34 each controlled by'fa check valve 35 which allows egress. At one en the c linder is provided witha spark plug -40 an a gasolene intake 41 and at the oppositeend 4said cylinder is provided with an'off'set chamber 42 containing a spark plug 43 and a gasolen intake 44 whereby the'gasolene is introdu'eed to opposite sides of the piston 6 and4 provision is' cglinder but prevents its made for igniting the gas in the explosion chamber at either side of said piston.

Theoperation of vthe piston 6 is precisely pirinciple as that of tliepistons-4 and 5 with t e exception that said iston is driven in both directions by the'ex osionof gas, the explosions taking place a ternately at opposite endsIof thecylinder and on op'- osite sides of the piston, the piston'acting uring va portion of its stroke to exhaust the its stroke to compress the charge, whileair burned gases and during another portion of;

is admitted alternately at opposite sides of the pistori to drive the burned gases-.out through the exhaust ports. `In connection with'the double. acting iston, however, itl will be necessary to emp oy an auxiliary air blast and for-that purpose, I have illustrated in Figs. 1 and 6, a fan arrangement embodying a pair offans 45 and 46, the primary fan 45 sucking the air in at the central opening 47 and driving the same out through a peripheral opening which communicates with a central opening 48 in the secondary fan 46, the air driven into said fan .being ropelledthrough a peripheral spout 49 "which communicates with' a blast pipe 50 leading into the valve chamber 19 as shown in Fig. 1.

51 designates a. branch pipe which leads from the air pipe 37 to the valvechamber- 17.I

corresponding cylinder ports when the is- --tons are at the up er' ends of their stro fes.

Therefore, when e air contained- 4in the tank 38 is liberated by opening the throttle valve 39, said air acts on 'top of such-,piston and starts the engine,. the tank 38 and` its connections being especially provided for the purpose of starting the engine.

.the engine is started, the valve 39 is closed and the fan blast pipe 50 and the air tank 31 As soon as will thereafter sup ly 4the necessary air. for 'i compression and or ejecting .the burned i gases from the explosionchambers.

52 designates a reversing lever havinga.

gine.

vnecting rod 55`to` -the ,125 ,Y thumb latch 53 @spewing with a notched segment 5,4 suitably connected withl'the en;- 'i

i so thatbymcvingsaid lever. eide or. vthe other'the link 23 ma be f leverfZ' is f'm'ounted a shaft '56- extending alo dejofjth'efengine and'. rvided with vimposed"slide al'yes and .falso the same l"con-' 'nection' with 'thel crankshaft 10.,..Thisj'enthe'sha'ft 62; of a transmission. pinion 634 z'o-ladaptedfto be 'throwninto engagement with men t with Aa similar gear '65 `1no unted "on Va countr-shaft the gear 65 meshingwith the f gear' v64 allas c early shown in-Figi. The shaft 6.2 has` in' addition -totheftransmis'sin' n, the airis sucked in past the intake llqwn stroke of lthe piston, the air is forced .pastthe valve 73 into the tank 31 u nder high burned gases through the a pair' of cylinders, 'isto'ns workin therein 'vrith'an exhaust-port intermediateits ends means' for admitting compressed air' into one Ineens for admittin air into the other cylinder alternately at t'h sides o f the piston,

cylinders and alsqcontrollin orts thereof, substantially as"` `es`cr1bed.

fresen'ce of .two Witnesses. -1

JosEPH MUNDEN getv pocket 7 1` having an airintake valy 2 andacheck-vvalve 73 which controls apipef? v2-ff iilllinthelower portion of the cyl inde'rbeneatht e pistomfvThen in the active onefofvwhich is sing e "acting and t e other double acting,one cylinder being'providedA pressure' so thatsubsequently when the valve #-.Epit'ismoved into alinement with the cylder 18,thecompressed-air rushes into the'feirplosioncharnben of the cylinder vand and theother Cyhnderbeing provided a pair of Aexhaust portsintermediateits ends,

d valyescontrolling' the air. connections-of 'lntestixnony whereof I. aiiix my signature if 

